Gun sight



Patented Feb. 24, 1948 UNITED STATES PATENT OFFICE GUN SIGHT Walter E.P. Schulz, Sheridan, Mont. Application January 30, 1945, Serial No.575,220

4 Claims.

This invention relates to firearm sights, and more particularly tosights for rifles, although it is applicable to other types ofequipment.

A main object of this invention is to provide an improved firearm sightof extremely simple construction.

A further object of this invention is to provide an improved mountingmeans for a firearm sight which is arranged for quick and easy removalof the sight from the firearm, and for accurate replacement thereof onthe mounting structure.

A still further object of this invention is to provide an improved gunsight wherein glare and confusing light reflections are eliminated andwherein only a sight aperture with a target finder therein will be seenby the person aiming the gun.

Further objects of this invention will appear from the followingdescription and claims, and from the accompanying drawings, wherein:

Figure 1 is a side elevational view of a portion of a rifle equippedwith a sight structure in accordance with this invention.

Figure 2 is a cross-sectional view taken on line 2-2 of Figure 1.

Figure 3 is a cross-sectional view similar to Figure 2 but disclosing amodification of the gun sight of this invention.

Figure 4 is a cross-sectional View similar to Figure 2 but disclosing astill further modification.

Figure 5 is a detail sectional view taken on line 55 of Figure 1,disclosing a spring biased detent structure for positioning the gunsight in proper position with respect to its guide support member.

Referring to the drawings, I designates the barrel of a rifle equippedwith the improved sight of this invention. Secured to the top surface ofbarrel I and extending for a substantial portion of its length is aguide support rail 2 having a pair of upper horizontal flanges 3, 3provided thereon.

Mounted on support rail 3 in slidable relation therewith is a taperedsight tube 4 provided with a lower depending web member 5 provided withdownwardly curled resilient gripping flanges 6, 6 embracing flanges 3,3, as shown in Figure 2. One of the flanges 6 is provided with a cuppedsocket portion I containing a spring member acting against a detent ball8 which cooperates with a notch provided in the side edge of flangemember 3 to releasably lock the sight tube 4 in an optimum position withrespect to gun barrel I.

Sight tube 4 is mounted so that its axis is substantially parallel tothe axis of barrel I. Said sight tube is inwardly tapered, and, inoptimum position, has its inner end about seven inches from the eye ofthe person aiming the gun, whereas thelength of the tube is such thatthe outer end thereof is adjacent the end of gun barrel I. The inwardtaper of tube 4 is such that the silhouette thereof appearing to the eyeof the marksman is a figure corresponding to the cross-sectional shapeof the tube, said figure being. a circle in the embodiment of Figures land 2. Provided at the outer end of sight tube 4 is reticle member 9comprising a short tubular element having positioned therein atransparent diaphragm marked with a vertical line or crosshair I0 havinga (lot or globule II at the center thereof. Reticle member 9 is securedinside sight tube 4 by frictional engagement, or by soldering, weldingor the like. A vertical fine wire carrying a central globule may bemounted in reticle member 9 without the use of a transparent diaphragmif so desired. The location of the cross- I hair member In issufliciently inwardly positioned with respect to the outer end of sighttube 4 so that no interference from glare is present in viewing thecrosshair. A glare shield member I2 may also be provided at the innerend of sight tube 4 to block out disturbing reflections from gun barrel,I, although this feature may interfere somewhat with viewing the objectsaround the target outside the field of view afiorded by the ta ered boreof tube 4, and may not be desirable for aiming at moving targets. Whennot desired, glare shield I2 may be easily slipped off the inner end oftube 4 since it is merely in frictional engagement with said tube.

Instead of being circular in cross-section, tube 4 may be semi-circular,having a flat base portion I3 slidably supported on flanges 3, 3 asshown in Figure 3. In this embodiment the tube is also taperedlongitudinally, as in the embodiment of Figures 1 and 2, so that theappearance of the tube to the eye of the marksman is merely thecross-sectional shape of the tube. A vertical crosshair element I4carrying a globule I5 is provided in the tube adjacent its outer end,said globule I5 being so positioned that the line of sight between theeye of the marksman and the globule will be parallel to the axis of gunbarrel I.

A further embodiment is disclosed in Figure 4 wherein thecross-sectional shape of the sight is triangular, having a base I6slidably engaging guide flanges 3, 3 of guide rail 2. A verticalcrosshair element I! having a, globule l8 mounted thereon is provided inthe sight tube adjacent its outer end, said globule l8 being sopositioned in the tube that the line of sight between the eye of themarksman and the globule will be parallel to the axis of gun barrel l.

Guide rail 2 may be provided with app p ate compensating devices to varythe alignment thereof with respect to rifle barrel I to allow for rangeand windage errors. These devices form no part of this invention.

While certain specific embodiments of gun sights have been disclosed inthe foregoing description, it will be understood that variousmodifications within the spirit of the invention will occur to thoseskilled in the art. Therefore, it is intended that no limitations beplaced on the invention other than as defined by the scope of theappended claims.

What is claimed is:

1. A sight attachment for a barreled firearm, comprising a longitudinalguide rail secured to the top surface of the barrel of the firearm andextending throughout the major portion of the length of the barrel, saidguide rail having undercut opposite longitudinal side portions extendingthroughout the length of the rail, and a sighting tube element having aflattened under portion to rest slidably on said guide rail, saidflattened under portion of the sighting tube element having longitudinalgripping portions at opposite sides thereof to slidably andinterlockingly engage the undercut longitudinal opposite side portionsof said guide rail, and releasably interengageable securing means beingprovided between said guide rail and said sighting tube element toreleasably fasten the sighting tube element in a. selected longitudinalposition on said guide rail.

2. The structure of claim 1, and wherein said tube element is ofcircular cross-section.

3. The structure of claim 1, and wherein said tube element is ofsemi-circular cross-section and said flattened under portion determinesthe bottom boundary of the cross-section.

4. The structure of claim 1, and wherein said tube element is oftriangular cross-section and said flattened under portion determines thebottom boundary of the cross-section.

WALTER E. P. SCHULZ.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 210,115 Gipperich Nov. 19, 1878837,223 Hennessy Mar. 16, 1906 912,050 Wanee Feb. 9, 1909 915,670 GibbsMar. 16, 1909 1,339,248 Winder Ma 4, 1920 1,774,053 Foster Aug. 26, 19302,028,055 Forsling Jan. 14, 1936' 2,276,446 Zimmerman Mar. 17, 1942'FOREIGN PATENTS Number Country Date 22,921 Norway 1913

